From: Mark Brown <broonie@kernel.org>
To: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Liam Girdwood <lgirdwood@gmail.com>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
ldv-project@linuxtesting.org
Subject: Re: [PATCH] ASoC: max98090: Remove unneeded check in max98090_put_enab_tlv()
Date: Thu, 19 May 2022 18:29:26 +0100 [thread overview]
Message-ID: <YoZ+dmprwb5Ohto3@sirena.org.uk> (raw)
In-Reply-To: <1652980212-21473-1-git-send-email-khoroshilov@ispras.ru>
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On Thu, May 19, 2022 at 08:10:12PM +0300, Alexey Khoroshilov wrote:
> Variable sel is of unsigned int type, so sel < 0 is not required.
>
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> val = (val >> mc->shift) & mask;
>
> - if (sel < 0 || sel > mc->max)
> + if (sel > mc->max)
The check needs to be moved, not removed. The userspace ABI allows
passing in of negative values.
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next prev parent reply other threads:[~2022-05-19 17:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-19 17:10 [PATCH] ASoC: max98090: Remove unneeded check in max98090_put_enab_tlv() Alexey Khoroshilov
2022-05-19 17:29 ` Mark Brown [this message]
2022-05-19 17:49 ` Pierre-Louis Bossart
2022-05-19 17:49 ` Alexey Khoroshilov
2022-05-19 17:54 ` Mark Brown
2022-05-19 18:27 ` Alexey Khoroshilov
2022-05-19 20:07 ` Mark Brown
2022-05-19 20:13 ` Alexey Khoroshilov
2022-05-19 20:31 ` Mark Brown
2022-05-19 22:31 ` [PATCH] ASoC: max98090: Move check for invalid values before casting " Alexey Khoroshilov
2022-05-20 16:58 ` Mark Brown
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